diff --git a/rai/blockstore.cpp b/rai/blockstore.cpp
index 2c042529..88b01b6a 100644
--- a/rai/blockstore.cpp
+++ b/rai/blockstore.cpp
@@ -687,7 +687,7 @@ std::unique_ptr<rai::block> rai::block_store::block_random (MDB_txn * transactio
 			}
 			else
 			{
-				region -= count.change;
+				region -= count.open;
 				if (region < count.change)
 				{
 					result = block_random (transaction_a, change_blocks);